Promaster 4302 ニコンF用リアレンズキャップ

Lost my original cap on a hike and this replacement clicks on with the same tight, reassuring lock as the factory one. The plastic feels sturdy enough that I don't worry about it cracking in my bag. Exactly what I needed.

The fit is snug and secure, which is exactly what you want when tossing lenses into a bag. My Nikon F lenses stay sealed up tight with these, and the price is right for how sturdy the plastic feels.

Picked up a couple of these to replace a missing cap, and the click-lock is reassuringly firm—no worries about it popping off in my bag. The inner ring is a bit stiff at first, but it seats perfectly on the mount after a few twists.